Mac: Cannot Connect to App Store, Fix

Several users have reported that they are having problems connecting to the Mac App Store. Further, users stated that this problem started after updating their Mac devices. The error message:

“Cannot Connect to the App Store”.

Cannot connect to the App Store

You may also see similar error messages:

  • An unknown error has occurred.
  • We could not complete your request.

Please note that if you are having this issue on your iPhone or iPad, please see this article.

This article explains what you can do when your Mac can’t connect to the Apple App Store and won’t download, install, or update apps.

See also: Cannot Send or Receive Messages on Your Mac?

Why can’t my Mac connect to the App Store?

  1. First, let’s make sure that there are no network connectivity issues. Make sure that your Mac is connected to the Internet. Check to see if websites load in Safari or in other browsers. If not, you may try the following troubleshooting tips:
    1. Restart your Mac. (Apple menu > Restart).
    2. Restart your router/modem (Unplug the power supply, wait 30 seconds and then plug it back in).
    3. Turn off and on Wi-Fi. (Click the Wi-Fi icon in the menu bar).
    4. Contact your Internet service provider and confirm that there are no outages.
  2. Make sure that Apple Mac App Store servers are up and running. Go to Apple’s System Status website and check. It is possible that the App Store service is having issues with its servers or systems. For instance, currently, it is saying “Mac App Store – Completed Maintenance. 1.7% of users were affected. Customers may have been unable to make purchases from the App Store, iTunes Store, iBooks Store, or Mac App Store.” As you can see, the Mac App Store was down for some users, and but now it is fixed. If this the case, there is little you can do. Just wait. You’ll know when the service is working again. Mac App Store Status
  3. Launch iTunes. From the top menu bar, click Account and then Sign out. After signing out, sign back in.
  4. Open the App Store on your Mac and then click Store (top menu bar) and click Sing Out and then sing back in.
  5. If you are using a VPN or proxy to connect to the Internet, disable them to see if that fixes your problem.
  6. Update your Mac. Make sure that your operating system is up to date. If you are running macOS Mojave or later, go to System Preferences > Software Update and then click Check for Updates. If there is an update available, update the software on your Mac by following the on-screen instructions. If you are running an earlier version of the macOS software (e.g., macOS High Sierra, etc) then you will need to open the App Store and click Updates.
  7. On your Mac, make sure that the date and time settings are done correctly. Go to System Preferences > Date & Time to check this. You may also want to check the box for “Set date and time automatically”.
  8. Restart your Mac in Safe Mode. You can restart your Mac by pressing and holding the Shift key as your Mac starts up (turn off your Mac then turn on and immediately press and hold the Shift key). Try the App Store in Safe Mode and then restart your Mac normally (this time, do not press the Shift key).
  9. On your Mac, complete the following steps:
    1. open the Keychain Access app (Applications > Utilities > Keychain Access).
    2. Click “System Roots”.
    3. Double Click “DigiCert High Assurance EV root CA”.keychain certificate settings
    4. Click “Trust” to expand it.
    5. Change “When using this certificate” from “Use System Defaults” to “Never Trust”.
    6. Now restart your Mac.
    7. And, when your Mac is on, follow the same steps to change “When using this certificate” back to “Use System Defaults”.
  10. On your Mac, follow these steps:
    1. Open Finder.
    2. From the top menu, click Go > Go to Folder and enter the following:
    3. /var/db/crls/
    4. Click Go.
    5. Delete these files: “crlcache.db” and “ocspcache.db”. You may have to enter your admin password.
    6. And then restart your Mac.

If everything above fails and the issue persists, you could contact Apple.

See also: This Item Is Temporarily Unavailable. Please Try Again Later

Dr. Serhat Kurt worked as a Senior Technology Director. He holds a doctoral degree (or doctorate) from the University of Illinois at Urbana / Champaign and a master’s degree from Purdue University. Here is his LinkedIn profile.

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40 thoughts on “Mac: Cannot Connect to App Store, Fix”

  1. Guys I have been trying to resolve this bullshit from morning and now its 6pm and finally I managed to figure out the solution, I have gone through all the docs and blogs and youtube and bla bla bla .. nothing worked.. Finally somewhere I found this keychain access and luckly the word “preferences”. I went there and selected file-preferences, something showed “set to default” I clicked okay, then I moved to my app store and tried to login, it showed something set to default again, I clicked okay, then that pre-filled apple id is gone and blank text boxes appeared, I entered my appleId and pass without any hope, then surprisingly it worked and I saw logout option instead of login in app store. I don’t know it will help someone. But it worked for me.

    • Can you be a little more specific? You enter keychain access, where preferences show up? you mean the upper menu > keychain > preferences?
      I´m losing my mind trying it

    • OMG, Thank you so much. finally figured it out at 4:24am in the morning. Try everything and use your method but confused, then try again for the last time, and it works. It’s been trying me crazy for months. Thank you

      P.S for anyone that confused with the instruction: Open your keychains window->go to upper left corner(Keychain Access, Select->Preference->Select Reset My Default Keychains. Then open your Appstore.

  2. My problem is that I’m on an old iMac (mid 2011) with old OS (Mountain Lion).
    I’m trying to upgrade to High Sierra (which is free and compatible to my model), but I’ve never used the App store before and it won’t let me download it until I have upgraded my software.
    Catch 22!
    Any solution?
    Many thanks

    • i just had harddrive crash on my imac mid 2011. installed new SSD-harddrive. to update to high sierra, you have to press and hold cmd+alt+r when booting up. This is starting Internet Recovery and you will be able to update to High Sierra, as it is the latest version compatible with our old macs.


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